FB will be a footnote in history as a temporary social fad for kids, gossips, exhibitionists and sundry show-offs. It is a simple server-client web app and some code for farming data from idiotic sheeple who can't see through the con.
It is not even in the same league as Bitcoin which is a revolution in the fundamental technology used for the efficient functioning of markets, economies and resource allocation.
This legendary gentleman is spitting knowledg right there.
FB = another shitty myspace
BTC = a technological milestone